WS2500 has unique structure & allow water to be efficiently emulsified in to alkyd paints whilst maintaining performance such as gloss, dry time, color acceptance & storage stability. Reduction in solvent hence the VOC emission of paint is possible by replacing solvent with water. WS2500 is a chemical product and make a reaction between film forming material (Resin) and water. WS2500 is not based on neutralizing of alkyd so you can add more & more water without changing in such performances.